Furnace.



M, R. MAGHOL.

FURNACE. APPLICATION FILED 001. 4, 1909. Llgfygg v Patented Jan. 2, 1912.

' M E f i:

ATTORIIEVS MORRIS R. MACHOL, OF STATEN ISLAND, NEW YORK, ASSIGNOR OF ONE-FOUR'l;I-I TO HALDWELL S. COLBY, OF NEW YORK, N. Y.

FURNACE.

Specification of Letters Patent.

Patented Ja 2,1912.

To all whom it may concern:

Be it known that I, Monnrs R. MAGI-IOL, a citizen of the United States, residing at Staten Island, in the county of Richmond and State of New York, have invented certain new and useful Improvements in Furnaces; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in furnaces and to means for mixing air with the combustible gases from the furnace so as to produce complete combustion and includes a novel means for introducing air under pressure to assist combustion aswill be hereinafter set forth.

More particularly the invention relates to means for changing air pressure into an atomizing blast to produce a suction in the manner of air injectors or atomizers, by means of this suction to draw the gases from the fire chamber into a secondary chamber where they are thoroughly mixed with the air which is at a high velocity and which produces "re suction and means for regulating the mixture so as to produce complete combustion.

In the accompanying drawings: Fig re 1 is a vertical longitudinal section through a furnace embodying the invention. Fig. 2 is a section throughFig. 1 approximately on line 22.

Fig. 1 shows a boiler of any desired kind having a furnace with an ash pit 2 and grate bars 3. Over the grate bars is an arch made of brick or other suitable material 1. Over this arch is another arch 6. At the side or front between the two arches of the fire chamber is an air chamber 7 with an entrance at a pipe 8 connected with a blower 9 shown in Fig. 1. The exit from this chamber is at the point 10 Where the two arches gradually approach each other to form a small orifice 11, immediately beyond this orifice 11 in the lower or inner arch .4 are holes or slots 12 through which the. gases from the furnace are drawn. The two arches then gradually diverge forming-secondary combustion chambers 13 with an exit 14 in which the now thoroughly mixed gases burn ,ment for the application of air under pressure in such manner as to utilize air pressure to form an atomizing blast next to the fire chamber, the atomizing blast being arranged adjacent one or more apertures or other openings in one of the walls of the fire chamber for drawing gases and the like from the fire chamber and mixing therewith. The apertures in the walls of the fire chamber and the atomizing blast are arranged so that the air and the matter from the fire chamber will be mixed and projected into a combustion chamber, whereby greater heat and more thorough utilization of the fuel are attained.

The above mentioned objects can all be obtained not only by means of air under pressure in the pressure chamber I have described and which constitutes a new method of draft but also with any of the existing methods of draft, namely boiler or fire room under pressure, ash pit under pressure induced draft by means of fan or jet in stack 01' by natural draft of stack or chimney.

\Vhat I claim is 1. In a furnace, a fire chamber, an arch over said fire chamber formed with orifices near each end thereof, means spaced on each side of said arch and extending over the arch and arranged to approach said hrch at the orifices therein, thus forming restricted openings, whereby chambers containing air pressure are formed, and means for progiding said chambers with air under pressing, said air under pressure being designed to escape through said restricted openings and mixing with the products of combustion from the fire chamber. "j

2. In a furnace, a fire chamber, anarch formed with orifices th'ereiu,.means placed on the sides of said arch and extending therefrom and approaching said arch near sai d orifices thus forming a-chamber between said means and said arch, and means for extending said first mentioned means whereby the same approaches said arch in such a direct-ion as to partially inclose a space above said arch, said space defining a -mixing chamber, (or combustion chamber),

and means for forcing air into said first mentioned chamber, which air is designed to escape therefrom at the point where the means defining the chamber approaches the arch,whereby gases are drawn from the fire chamber and mixed with the air in said i ing chamber.

3. In a device of the character described,

a furnace formed with a fire chamber, an

arch above said fire chamber provided with orifices for the passage of gases from said 5 fire chamber, a second arch arranged above said first mentioned arch and formed so as to approach said first mentioned arch 'nea r the orifices of said first mentioned arch,

:whereby a restricted opening is provided 10,, between said arches for causing the pres- ,sure in the chamber formed between the ,archesto force a jet of air through said restricted opening past the orifices in said ,arch. a I p In a device of the character, described, a furnace formed with a fire chamber a ,plurality of arches arranged over the ,fire chamber, part of said arches forming a combustion} chamber the lower arch havlng orifices arranged therein for formring a, passageway for the gases to pass from the fire chamber into the combustion .chamber, the upper arch being so con- :;,structed as to approach the lower arch at lfr t he orifices in the lower arch for defining ,0,penings, and means for supplying air be ,tween said arches, which air is designed to 1pass into said combustion chamber through "said openings and to draw gas from said fire chamber and mix therewith, the posi- ,tionof the orifices being so arranged as .to utilize the velocity of the air retained at such restricted openings between said arches to produce a suction after the man- -ner of an injector forthoroughly drawing 5 gases from said fire chamber and complurality 5eombustion chamber being formed by the a a: yupperopart of said superimposed conver '.in g arches, the lower part of said arches defining an an space, sald orlfices in said lower arch being the only exits from the --:fire chamber for the passage of gases into :the combustion chamber, said orifices being located adjacent the point of convergence .aof said arches, the converging of said arches forming a restricted opening between the 55,:arches at said orifices for causing the utilie.. ..-zation of the velocity of air as the same passes from the air chambers into the combustion chamber, whereby the gases in the fire chamber are drawn therefrom after the manner of an m ector and mixed with the air as the same is forced into the combustion chamber.

6. A furnace having a tire chamber, a

pair of superimposed arches arranged over said fire chamber and extendingon each side thereof, said arches being formed so as to approach each, other near each side and from said points of approach extending chamber through said restricted openings the, pressure of the air is converted into velocity for producing an atomizing blast for drawing and mixing gases froln said firechamber and projecting the same into said combustion chamber.

7. A furnace having a fire chamber, a pair of superimposed arches for defining a combustion chamber, and a pairof air heating chambers, one of said arches being formed with orifices opening'intosaid fire chamber, said orifices being the only exits for the passage of gases from said fire chamber, said arches being arranged to converge near the point where said orifices are located for producing a restricted opening ifor said air heating chambers near said orifices, whereby the air pressure in said air heating chambers is converted into an atomizing blast which is arranged to pass said orifices for drawing the gases from the fire chamber through said orifices and mixing therewith, and means for supplying air under pressure to said air heat-ing'chamber.

In testimony whereof I afiix my signature in presence of two witnesses.

MORRIS R. MACHOL. Witnesses:

.Huoo Moon,

M. SCHAAF. 

